A van drove into a crowd of people on Las Ramblas, the main tourist and commercial street in Barcelona, on Thursday, killing and injuring several people in what authorities said was a terrorist attack. Two suspects have been arrested, according to police.

In the aftermath of the attack, rumors started spreading online about the perpetrators and their motivations.

Here's the online misinformation so far:

1.There was no hostage situation in Barcelona as early reports suggested.

Catalonia's official emergency services told followers to stay tuned to its account and @mossos — the Catalonian police force — for updates on any further attacks. In addition to the van attack in Barcelona, suspected terrorists attempted an attack in the Spanish city of Cambrils. Official accounts were quick to tweet the new information.

5.Law enforcement not working any kind of terrorist incident in the Spanish town of Reus, the Catalonian police force said.